Certain Balance Sheet Components (Schedule of Damaged and Obsolete Fixed Asset Write-Offs, Disposal Costs, Insurance Recoveries for Ola, Arkansas Sawmill Fire and Gain on Fire Damage) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Gain on fire damage	$ (24,913)	$ (4,394)	$ (34,505)	$ (4,394)
Ola Arkansas Sawmill [Member]
Property, Plant and Equipment [Line Items]
Fixed asset write-offs	0	7,436	0	9,544
Disposal costs	87	1,062	924	1,062
Total fixed asset loss on disposal	87	8,498	924	10,606
Insurance recoveries	(25,000)	(12,892)	(35,000)	(15,000)
Gain on fire damage	(24,913)	(4,394)	(34,076)	(4,394)
Timber Properties [Member]
Property, Plant and Equipment [Line Items]
Insurance recoveries	$ 0	$ 0	$ (429)	$ 0